在電氣自動化(hua)中運用無(wu)功(gong)(gong)(gong)(gong)補(bu)償技術，可以(yi)有效地(di)提(ti)(ti)高有功(gong)(gong)(gong)(gong)功(gong)(gong)(gong)(gong)率(lv)。通過控制(zhi)變量法提(ti)(ti)高有功(gong)(gong)(gong)(gong)功(gong)(gong)(gong)(gong)率(lv)，在對發供電設備(bei)容量有一定要求的前提(ti)(ti)下，如果設備(bei)容量保(bao)持恒定，無(wu)功(gong)(gong)(gong)(gong)補(bu)償技術的應用可以(yi)使功(gong)(gong)(gong)(gong)率(lv)因數得到(dao)提(ti)(ti)高，減少無(wu)功(gong)(gong)(gong)(gong)功(gong)(gong)(gong)(gong)率(lv)的損耗，這樣也就提(ti)(ti)升了有功(gong)(gong)(gong)(gong)功(gong)(gong)(gong)(gong)率(lv)的潛(qian)能(neng)。

變壓器低壓補償模(mo)組(zu)的諧波放大(da)問(wen)題(ti)解決辦法

無(wu)(wu)源濾(lv)波(bo)(bo)(bo)(bo)器(qi)(qi)(qi)(qi)諧(xie)振點偏移，效果(guo)降低;有源濾(lv)波(bo)(bo)(bo)(bo)器(qi)(qi)(qi)(qi)不(bu)(bu)(bu)受影響。無(wu)(wu)源濾(lv)波(bo)(bo)(bo)(bo)器(qi)(qi)(qi)(qi)可(ke)能因為超載(zai)而(er)(er)損壞;有源濾(lv)波(bo)(bo)(bo)(bo)器(qi)(qi)(qi)(qi)無(wu)(wu)損壞之危險，諧(xie)波(bo)(bo)(bo)(bo)量大于補(bu)償(chang)能力時，僅發生補(bu)償(chang)效果(guo)不(bu)(bu)(bu)足(zu)而(er)(er)已(yi)。無(wu)(wu)源濾(lv)波(bo)(bo)(bo)(bo)器(qi)(qi)(qi)(qi)補(bu)償(chang)效果(guo)隨著負載(zai)的變(bian)化而(er)(er)變(bian)化;有源濾(lv)波(bo)(bo)(bo)(bo)器(qi)(qi)(qi)(qi)不(bu)(bu)(bu)受負載(zai)變(bian)化影響。無(wu)(wu)源濾(lv)波(bo)(bo)(bo)(bo)器(qi)(qi)(qi)(qi)較低;有源濾(lv)波(bo)(bo)(bo)(bo)器(qi)(qi)(qi)(qi)太高。

主(zhu)動型諧(xie)波(bo)(bo)抑制(zhi)方案常用(yong)(yong)的方法(fa)包括增(zeng)加整流(liu)(liu)器的相數(shu)、使(shi)用(yong)(yong)脈寬調制(zhi)法(fa)，采用(yong)(yong)多電平變流(liu)(liu)技術(shu)和加裝(zhuang)功率因(yin)數(shu)預調整器等，這種方法(fa)能從根源上解決諧(xie)波(bo)(bo)問題，濾波(bo)(bo)效果好，但它(ta)僅適用(yong)(yong)于電力電子設備(bei)類諧(xie)波(bo)(bo)源。